Tube



FIG. 1 is a top, front, right side perspective view of a tube showing mynew design;

FIG. 2 is a front elevational view thereof, the rear elevational viewbeing a mirror image;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side elevational view thereof, the left sideelevational view being a mirror image; and,

FIG. 5 is a bottom plan view thereof.

CLAIM The ornamental design for a tube, as shown and described.